(str) String merge/join that is the inverse of String.split()

Name: jl125535 Date: 03/17/2004


A DESCRIPTION OF THE REQUEST :
The class java.lang.String lacks a facility to merge a String array to a single String with support for a delimiter that's inserted between the array elements. This facility should be the opposite of java.lang.String.split .

JUSTIFICATION :
The String merge/join facility is very common thing and can be used in many situations. It would make the life of the majority of Java developers easier.

EXPECTED VERSUS ACTUAL BEHAVIOR :
EXPECTED -
The best way to provide a String merge/join facility would be to implement a new String constructor with two parameters: a String array and a delimiter.

public String(String[] tokens, String delimiter)
{
// The implementation is left as an exercise to the reader ;-)
}
ACTUAL -
The following pseudo code shows how the new constructor should work :

String[] tokens = new String[]{"Hello", "World!"};

String greeting = new String(tokens, ", ");

System.out.println(greeting);

The output of the code snippet should be: Hello, World!

CUSTOMER SUBMITTED WORKAROUND :
A workaround would be to implement a helper mewthod that does the merge.
(Incident Review ID: 240506)
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